secret squirrel

We have every version of the 5efe over here with every version of paseo included the (also rare here) 5efhe. I've got access to a (what should be a straight swap) dumb as dog dodo early version 5efe from a paseo which I intend on horing for it's seats, P/S and rear disc brakes also. I will write a more detailed reply but It is time to go to work fo me . Joz, did you go for a run with your tuner with your 5efe or your now 5efhe? As I said in the PM, that would make a huge difference. Thankyou for your replies and keep them coming if anyone has something to add . I'll drop in after work. . . . Matt

Hi guys, I'm from the land of Oz and I'm probably going to drop a 5efe into my starlet because I can do it for practically nothing other than time. I plan on leaving the 4efe ECU in place and transfering the TPS and W/T sensors because it gets a bit hot in queensland and A/C is a necessity which seems to be the only area that the 5efe and the 4efe looms seem to differ. So, my question is : Has anyone ever actually had there car checked on a dyno or via a wideband to see what the AFR's are like running the 5efe motor on the 4efe ECU? To my thinking, closed loop should behave exactly the same and as both engines are physically identical (most importantly the head and therefore flow capabilities) except for stroke (capacity), then it should be fine. It will just run 1-2 load reference pionts higher accross the map due to the extra load (amount of air being injested) from the larger capacity. In turn, compensating with more fuel. Hopefully someone was thourough enough to have there car tested? Any first hand, accurate information would be most appreciated. P.S. I'm a mechanic that has dabbled in tuning before so feel free to get as in depth as you find necessary